This trick reveals whether it's a clean beer cup (Video)

The video taken by a brewer shows the difference between a clean glass and an unclean beer cup.

In fact, the leftovers can change the flavor of carefully produced beer, is transported, and properly packaged to preserve its flavor, transmits telegrams.

The secret that reveals whether there are traces left in the glass of detergent, oil or other matter that does not remain in it in bubbles which “tangle” to the ends of the glass, but also in the foam which quickly “ullet”.

The best way to verify how clean your glass really is to get it wet, cut salt in it, and shake it.

If you equally cover the inside of the cup, it's “pure for beer”, if not, the glass is unclean and there are fat stains that attract more salt.